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Chapter 1 Algebraic Numbers and Algebraic Integers 1.1 Rings of integers We start by introducing two essential notions: number field and algebraic inte- ger. Definition 1.1. A number field is a finite field extension K of Q, i.e., a field which is a Q-vector space of finite dimension. We note this dimension [K : Q] and call it the degree of K. Examples 1.1. 1. The field Q( √ 2) = {x + y √ 2 | x, y
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CORE COURSES AP6001 Introduction to Museum Studies The origins and meaning of the fluid and ever-changing concept called the “museum” are under constant debate: from the 1925 archaeological discovery of a 530 B.C.E. collection of artifacts and accompanying museum labels curated by the Babylonian princess Ben Shalti-Nannar in Ur (present-day Iraq); to the term’s etymological roots in the Greek mous
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